stratum: support for Machinecoin 0.16 mn+segwit (tpruvot#265)

stratum/coinbase.cpp

@@ -204,6 +204,71 @@ void coinbase_create(YAAMP_COIND *coind, YAAMP_JOB_TEMPLATE *templ, json_value *
 		coind->reward = (double)available / 100000000 * coind->reward_mul;
 		return;
 	}
+ 	else if(strcmp(coind->symbol, "MAC") == 0) {
+		char script_payee[1024] = { 0 };
+		char payees[4];
+		int npayees = (templ->has_segwit_txs) ? 2 : 1;
+		bool masternode_enabled = json_get_bool(json_result, "masternode_payments_enforced");
+		bool superblocks_enabled = json_get_bool(json_result, "superblocks_enabled");
+		json_value* superblock = json_get_array(json_result, "superblock");
+		json_value* masternode = json_get_object(json_result, "masternode");
+
+		if (masternode_enabled && masternode) {
+			const char *payee = json_get_string(masternode, "payee");
+			json_int_t amount = json_get_int(masternode, "amount");
+			if (payee && amount)
+				++npayees;
+		}
+  		if(superblocks_enabled && superblock) {
+			for(int i = 0; i < superblock->u.array.length; i++) {
+				const char *payee = json_get_string(superblock->u.array.values[i], "payee");
+				json_int_t amount = json_get_int(superblock->u.array.values[i], "amount");
+				if (payee && amount) {
+					++npayees;
+				}
+			}
+		}
+		sprintf(payees, "%02x", npayees);
+		strcat(templ->coinb2, payees);
+		if (templ->has_segwit_txs) strcat(templ->coinb2, commitment);
+  		if(superblocks_enabled && superblock) {
+			for(int i = 0; i < superblock->u.array.length; i++) {
+				const char *payee = json_get_string(superblock->u.array.values[i], "payee");
+				json_int_t amount = json_get_int(superblock->u.array.values[i], "amount");
+				if (payee && amount) {
+					npayees++;
+					available -= amount;
+     					// superblock payments are going to use P2SH addresses / segwit transactions
+					base58_decode(payee, script_payee);
+					char eamount[32];
+					encode_tx_value(eamount, amount);
+					strcat(templ->coinb2, eamount);
+					char coinb2_part[1024] = { 0 };
+					char coinb2_len[3] = { 0 };
+					sprintf(coinb2_part, "a9%02x%s87", (unsigned int)(strlen(script_payee) >> 1) & 0xFF, script_payee);
+					sprintf(coinb2_len, "%02x", (unsigned int)(strlen(coinb2_part) >> 1) & 0xFF);
+					strcat(templ->coinb2, coinb2_len);
+					strcat(templ->coinb2, coinb2_part);
+					debuglog("%s superblock %s %u\n", coind->symbol, payee, amount);
+				}
+			}
+		}
+		if (masternode_enabled && masternode) {
+			const char *payee = json_get_string(masternode, "payee");
+			json_int_t amount = json_get_int(masternode, "amount");
+			if (payee && amount) {
+				npayees++;
+				available -= amount;
+				base58_decode(payee, script_payee);
+				job_pack_tx(coind, templ->coinb2, amount, script_payee);
+			}
+		}
+		job_pack_tx(coind, templ->coinb2, available, NULL);
+		strcat(templ->coinb2, "00000000"); // locktime
+
+		coind->reward = (double)available / 100000000 * coind->reward_mul;
+		return;
+	}
 
 	// 2 txs are required on these coins, one for foundation (dev fees)
 	if(coind->charity_percent)